.custom_nav{
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 2;
    background-color: #FFF;
    &_content{
        position: absolute;
        left: 50%;
        transform: translateX(-50%);
        font-size: 34rpx;
        display: flex;
        align-items: center;
        justify-content: center;
    }
}